Electronic & Hydraulic Shifting (Di2, Ui2, customisations)

Were the limit screws right? I normally leave them alone unless the RD literally can't move into the end gears. If the indexing is off then I'd just keep playing with the microadjust until sorted.

What do you think is wrong? What's happening?

I got new wheels and it was overshifting so I tweaked them but I can;t seem to nail the shifting now and for some reason when I whack it in the 5th gear and try to use the micro-adjust to make it rub against the next gear as per the instructions, it doesn't seem to ever do it. Makes me wonder if I've fucked it with the limit screws.

Just want to go back to day zero to start again.

What does it do at the ends of the cassette?

Have you used the adjustment mode and moved it fully the other direction to see if it changes/rubs? I've had it before that the hanger was bent and I'd overcompensated so much with microadjustment I was running it wholly in the other gear, next to the one it "thought" it was in.

If you really want to start from scratch then the service manual for your model on Shimano site.

I'll shove it on the stand and have a play once I've finished work.

I'll shove it on the stand and have a play once I've finished work.

How and where you masturbate is entirely up to you but there are some laws that might have repercussions... at least that's what I've heard.

There's nobody using the bike stand in the park at this time, it's too cold, wet and windy out.

Looks like you were right, I pushed the microshift in the other direction until it changed gear, backed it off a bit and it seems to be "better" now. Can't really test it due to the weather tho.

I don't think there's a "reset", not for shimano or SRAM, only Campagnolo had a zero offset.
If it works with one wheel and the other one is out of adjustment parameters it's probably the wheel.

Ive just finished a rebuild from mech to di2 (R8050/8070) and found that the second hand front derailleur has a rounded high limit screw. Is it a standard size that I can get from a local hardware store or do I need an 'official' Shimano screw?
My brain is fried from internal routing through a Deda Superbox stem... looks nice and clean, but that's going to be a nightmare when it needs servicing again!

Is it a standard size that I can get from a local hardware store or do I need an 'official' Shimano screw?

A standard metric flat point grub screw will function

My brain is fried from internal routing through a Deda Superbox stem... looks nice and clean, but that's going to be a nightmare when it needs servicing again!

Spare a thought for my internal routing - I have to unsolder and resolder a couple of wires! Figuring out how to get from the middle of the stem to the middle of the steerer nearly did my head in.

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Perfect, thanks! Any chance you know what size?

what size?

No, but M3 or M4, so you can literally tell the difference just by looking

This makes me equal parts amazed and terrified! :D

Thread here all about it, if you're interested

It's M4 x 8mm.

Actual thing is on the left. I just tried the regular socket cap screw and it works fine, there's nothing anywhere near it that the larger head might interfere with.

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Bingo, thank you - this should solve the last piece of the puzzle!

This won't work with an Ultegra FD in the mix will it?

https://www.merlincycles.com/shimano-xt-m8050-di2-rear-derailleur-11-speed-140973.html

No.

i wonder how much money shimano lost by blocking this

Allegedly there is a technical reason for it, to do with chainlines and the front derailleur's auto trimming function. I'm not entirely convinced of that explanation.

Yeah, I'm sure it would fail on some setups but none of the configs I've been running for the last 10 years were within factory specifications either and they work so I'm not bothered about testing it.

Is there a cable adapter that would allow me to use the newer 12S style battery with an 11S setup?

There's a cable adapter but it's only for use with 11 speed TT shifters as far as I'm aware. No other 11 and 12 cross compatibility.

Thanks. Just thinking if I buy a new battery, I'd want the newer ones not the older ones and would that work, but I guess they're forcing a full upgrade.

Still waiting on that Di2 jailbreak

Someone has found Shimano patents for 13 speed fully wireless Di2

https://www.globalcyclingnetwork.com/tech/news/new-patent-suggests-shimano-is-designing-13-speed-fully-wireless-electronic-groupset